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METHOD OF OBTAINING INFORMATION ON INPUT OPTICAL SIGNAL, BASED ON CONVERSION OF SIMULATED OPTICAL SIGNALS USING HETERODYNE OF THE PHOTODETECTOR, AND DEVICE THEREFOR
METHOD OF OBTAINING INFORMATION ON INPUT OPTICAL SIGNAL, BASED ON CONVERSION OF SIMULATED OPTICAL SIGNALS USING HETERODYNE OF THE PHOTODETECTOR, AND DEVICE THEREFOR
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机译:基于使用光电探测器的异戊二烯转换的模拟光信号的输入光信号信息的获取方法和装置
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摘要
FIELD: optical system; measurement equipment.;SUBSTANCE: invention relates to optical measurements and concerns a method and a device for obtaining information on an input optical signal. Method is based on conversion of modulated optical signals using a heterodyne photodetector and comprises frequency modulation of radiation and transmitting to photodetector input of photodetector device, which is fed with modulated electric pulses of same frequency with synchronisation of phase delay. Simultaneously modulated optical radiation is fed to photodetector input of an additional photodetector device, which is fed with electric pulses from heterodyne with frequency of modulated optical radiation quadrature relative to feed pulses of main photodetector device. Based on signal from an additional photodetector, obtaining information on phase delay of input optical signal, which is used to synchronise heterodyne.;EFFECT: high information value, sensitivity, selectivity and signal-to-noise ratio.;3 cl, 1 dwg
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